Which of the following types of studies require approval by an Internal Review Board? 1. research that poses risks to participants
2. surveys not meant to be published
3. data collected for instructional purposes only
4. data collected on vulnerable populations
5. data collected through phones or computers

hope this .

r3t40

answer: i realy don't get it that much can you me figer it out pleas you

step-by-step explanation:

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

35 is an outlier

step-by-step explanation: